Safety razor



Mrh 15, 1938. 1 v J. G. LAWRENCE v 2,111,217

SAFETY RAZOR Filed May 20, 1935 2 Sheets-fSheet 1 l l v l March 15,1938.f J. G. LAWRENCE 2,111,217

SAFETY RAZOR Filed May 2o, 1935 2 sh'eetsfsheet 2 l `hard substances.

Patented Mar. 15., 1938 UNITED STATES PATENT oFFlcE y11 claims.

The invention 'relates to the typfeof razor which a.l short and usuallyii'exible blade is .clamped between a bed plate having a serratedy ortoothed margin projecting` beyond the razor blade forl protecting theface of theuser, and a` movable clamping plateor head. In razors of thistype the sharp edge of the blade is exceedingly delicate and almostcertain to -be -dulled, to' some extent, by contact with any hard orsemi- The principal object of the present invention, is-to provide ablade and holder therefor which 'willpermit the aprlicationgof theblad'" to the holder, and its vrem val therefrom, without danger'oi`having the edge or edges brought in contact with any part of the holder.Other features of improvement willappear in the following descriptlonfyThe invention, as to some of itsvfeatures, may 2Q be variously embodied.'Iwoforms of the holder Y are' hereinafter described and illustratedV inthe accompanying drawings: in which Fig, lis an elevation of one form oftheirnproved razor, anv end ofthe head being in view;

Fig. .2 is a sectional viewon the line 2-2 of F18'. 1^;

Figs. 3 and 4 are sectional details on the lines 3 3 and 4-4.respectively,l of Fig. 2

Fig. 5 is a -detail elevation of the head of the razor from thee samepoint oi' View as Fig. 1, the clamping elements beingshownin openposition to permit the removal of theblade;

Fig. 6 is anelevation showing the head of then section on the lineII-II'of The blaue 'is usaly with. eitherm the mus trated formsofholder, and capable of usewith other forms thereof, is in the form, of athin plate. of exible elastic material, the general shape of which isoblong lrectangular.' The margins of its longer sides It, I1,/ arebrought to `cutting edges. slotted from one end, as shown at I8, theslot extending somewhat beyond half the length of Fig. 9 is av view inperspective of the blade re.-

The blade ,is centrally longitudinally the blade and its margins beingflanged approximately at right angles to the face of the bladebutslightlyinclined toward the slot, as shown at I9, I9. Beyond the slotI8, preferably to the farther end oi the blade, there .is a bowed rib2f. 5 the side walls of whichmay 4be continuations of l the anges I9,I9.I The slot I8 permits the introduction and removal of therme@vlongitudi-` nally `into and from a suitable holder, the anges I9, is,and rib 20 being adapted to engage suit- 19 able'guldes forpositioningand facilitatingv the binding of ^the' blade within the parts of theholder. g Y

` The holder comprises a suitable handle bar 2I, into one end of Iwhichis inserted a` tubular 16 shank 22, which is secured in place by a tightiltting pin 23. A'longitudinallymovable spindle" 24, lwhich carries thehead of the razor,I projects through the shank 22, :and is slotted, asshown atv 25, to receive the pin 23, and its inner end is 20 reduced indiameter and threaded,v as shown at 26, to engage a tubularnut 21, whichprojects beyondl the handle 2I,`a knuried annulus//Z being fitted uponthe outer end of this Vnut and bearing against the outer end of thehandle ele;v 25

ment 2l. The nut 21 is provided near its inner endewith an annularshoulder 29,J which bears against an inwardly facing complementaryshoulder formed in the handle ban/the described construction providingfor free turning of the nut but 30 preventing its longitudinal movement.

The head of the holder comprises a clamping plate 30, which may beformed integrally with the spindle 24, as most plainly shown in Fig.' 3.

This clamping plate is provided with' av central 35.

longitudinal rib on its linner face, to which the spindle 24 is.integrally connected,as shown in Fig. v8. The portion 3 I of thisv ribwhich extends in one directionfrom the spindle 24V fits within th slotIl oi the blade I5, and snugly between' 40 the flanges I3, I9 securelystabilizing the blade `against Vlateral movement. Theportion 32`of thisrib at the opposite side of the spindleA is of such size-and shape thatit snugly engages within the rib 20 of the bladewhen the head is closedto 45 clamp the blade, as shown in Figs. 1, 2, and 3, against a suitablebed.

'A Preferably, though not necessarily, this bed is composed of twomovable' plates 33 and 34,

mounted on a pivot pln'35,set through the` spln- 50 bed plates 33, 34,are drawn down'against and binding the blade i firmly against -theirupper,

faces. e

When the head is opened by the outward'thrlst of the spindle 24, theparts are broughttto the positions shown4 in Iiiig.` 5, the vbed plates33, 34, being caused to turn on the pi 35 by the en gagement with themof a pair o` hooked ,lingers 3l, 3l, which extend from the end of theshank 22 into pockets formed in the underfaces of these plates, andengage over shoulders 39, 40, formed therein.

In the construction shown in Figs. and 11, these hooked fingers aredispensed with, an expanding spring 4I being coiled about the pin 35,its endreacting against the two hed plates to cause them to turn on thepivot pin as the head is opened.

The bed plates 33, 34, are provided with a series 4of teeth 44 alongtheir outer margins, over and face of the user, supporting shoulders atthe ends of the plates, however, being provided, as indicated' at 45, 4.yIn order to protect the corners of the blade, as well as the face ofthe user, from accidental injury, each of' the bed plates is providedadjacent its end with an upstanding boss, as shown at 42, 43, againstwhich the corners of the blade engage. These bosses are, of course. ofvery slight elevation, as they are not intended to project above theexposed face of the blade.

The blade is entered into the headlongitudinally, as suggested in Fig.'7, its slotted end being in advance. The inner end. of the rib 20.reaches the spindle 24 when the blade is fully entered. This spindlebeing now Idrawn down into the handle by the turning of the nut 21, theparts of the head are brought together to firmly clamp the blade betweenthe plate 30 and the bed plates 33, 34, and the ribs'3l, 32, insure itscorrect positioning. The blade may be removed by opening the head andturning it approximately vertical, the rib 32 being downward, whereuponthe blade will drop by gravity. In these operations ,there'is hardly apossibility of the edges of the against relative turning movement aboutthe axis of the handle by their pivotal connection, andA against suchmovement together by the pin 23 and by the engagement of the hubs `forthe pivot pin l5 in a 'transverse slot in the end of the-shankl 22, whenthe' head is closed to clampv the blade.

I claim as my invention- 1. Anoblong razor blade having La longitudincutting edge, -a longitudinally open slot extendingirom= one end, andspring flanges anking the slot and inclined inwardly with referencethereto. 2. A blade for safetyrazors, the bladebeing oblong in form andhaving an open slot from one end through more than one-half its length'and@ having a bowed rib beyond and in line with the f slot, the innerend of the rib constituting an abutment for engaging a suitable-stop ona' holder and .1 a positioning rib.

vside walls of the rib being adapted to engage 3. A blade for safetyrazors, said blade being oblong in form and having an open slot from onei end on its median line through more than onehalf its length, and apair of inwardly inclined flanges at the margin ofthe slot and having abowed rib beyond and in line with the slot, substantially as andv forthe purpose-described.

4. In a safety razor, a tubular handle, a longitudinally movable spindlewithin and projecting beyond the handle, a pair of bed plates pivotallymounted on the spindle and having faces for seating against the end ofthe handle whenin serv- `ice position, a clamping plate mounted on theend of the spindle and having on its inner face a centrallylocatedlongitudinal rib, a blade centrally slotted from one end toreceive the rib, and means for moving the spindle longitudinally toclamp theblade between the last-named plate and the bed plates.

5. In a safety razor, a tubular handle, a longitudinally movable spindlewithin and projecting beyond the handle, a pair of bed plates pivotallymounted on the spindle and having faces for seating against the end ofthe handle when in service position, a clamping plate mounted on the endof the spindle and having on its inner face a centrallylocatedlongitudinal rib, a blade centrally slotted from one end toreceive the rib and .having a longitudinal bowed portion in line withthe slot, and means for moving the spindle longitudinally to clamp theblade between the .lastnamed plate and the bed plates.

6. In a safety razor, a tubular handle, a longitudinally movableYspindle projecting from the handle and now rotatable relativelytheretoja clamping plate rigidly mounted on the end of the spindle, apair of bed plates pivotally attached to the spindle and engageable withthe end of the handle as the spindle is drawn thereinto, whereby theclamping plate and bed plates are brought into blade binding relationand means for moving thespindle.

7. In a safety razor, a suitable handle, a longitudinally movablespindleprojecting from the handle, a clamping plate rigidly mounted onthe end of the spindle, a pair of 4bed plates pivotally mounted on thespindle and engageable with the end of the handle as the spindle isdrawnthereinto, whereby the clamping plate and bed plates are broughtinto blade binding relation, and means adapted `to turn the bed plateson `their pivot as the spindle is extended to separate them from thecompression plate.

8.A In a safety razona suitable handle, a longi` tudinally movablespindle projecting from the handle, a clamping plate rigidlymounted onthe end' of the spindle, a pair of bed plates pivotally mounted on thespindle and engageable with `the end of the handle as the spindle isdrawn thereinto, whereby the clamping plate and bed plates are ,broughtinto "blade binding relation, and means adapted to cause the bed platesto turn on their pivot away from the compression plate as the spindle isextended.'

9.'. In a safety razor, a suitable handle, a 1ongitudinally movablespindle projecting fromfthe handle, a clampingplate rigidly mounted onthe end of the spindle, a pair of bed plates pivotally mounted on thespindle and engageable with the end of the handle as the spindle isdrawn thereinto, whereby the clamping plate and bed plates. l

, are brought into blade binding relation', and a' z -pair of fingersprojecting from thehandle and f gitudinally movable spindle projectingfrom the handle, a clamping plate rigidly mounted on the end ofthespindle, a pair of bed plates pivotally mounted on the spindle andengageable with the fend of the handle as the spindle is drawnthereinto, whereby the clamping plate and bed plates are brought intoblade binding relation, and af spring adapted to urge the bed plates toturn on l their pivot as the spindle is extended.

11. In a safety razor, in combination, a handle, an extensible spindleprojecting from the handle, a blade clamping plate carried by thespindle and having a transversely concave inner surface, a iiexibleblade adapted to seat against the concave face of the plate, and a pairof bed plates pivotally mounted at the end of the handle and movableabout their pivots by the relative movements of i the handle and spindleto clamp the blade to the plate. i

- JOHN G. LAWRENCE.

